I did a search on the Shark Injector on this forum but didn't find any real test reports. Does the Shark do the same thing as the Sprint but with extras? In other words, the gas pedal feel on my 330 basically sucks... especially when easing away from a stop sign etc. The Sprint Booster sounds like it might solve the problem. Will the Shark solve this problem as well? It seems that with the "fuel enrichment, transition fueling, camshaft timing, ignition timing, and VANOS control" enhancements it's a better bang for the buck.